Bobbin race and cover.



F. EHRENDRIECH. BOBBIN RAGE AND COVER.v APPLICATION FILED JAN. 9, 1911.

Patented Mal". 2, 1915.

THE NORRIS PETERS COI. FHOTO L(THCL. WASHINGTON. LL C4 FRANK EHRENDRIECI-I, OE BELVIDERE, ILLINOIS, ASSIGNOR 'IO NATIONAL SEWING- lVIACI-IINE COMPANY, OF BELVIDERE, ILLINOIS, A CORPORATION OF ILLINOIS.

BOBBIN RACE AND COVER.

Application filed January 9, 1911.

y a citizen of the United States, residing at Belvidere, in the county of Boone and State yof Illinois, have invented certain new and useful Improvements in Bobbin Races and Covers, of which the following is a specilication. y

lThis invention relates to a bobbin race and cover for a sewing machine bobbin, and the principal object is to provide resilient connecting means for the bobbin race and cover.

Another object is to provide a novel engaging means to retain a bobbin cover in the bobbin race.

A further object is to provide a connecting device of this character which issimple in. construction Yand effective and efficient in operation. Other objects will appear hereinafter, the novel construction, combination and arrangement being pointed out in the claims.

In the accompanying drawings Figure 1 is a view of the inner side of a bobbin cover. F ig. 2 is a sectional view of the same. Fig. 3 is a viewy of the inner side of a bobbin race. Fig. 4 is a sectional view of the same with a plan view of the spring tongue. Fig. 5 is a cross-sectional view of the spring tongue and the connection thereof.

Referring now more particularly to Figs. 1 and 2 of the drawing, the bobbin cover 11 may be of the ordinary or usual construction with end openings 12, side openings 13, 14, a slot 15, spring 16 and its retaining devices 17. The central portion or projection 18 upon which a bobbin is mounted and about which it rotates, is formed with an opening 19, and this opening is enlarged to form a projection or shoulder 20.

Figs. 3 and 4 show a bobbin race 21 of the ordinary shell form and construction, provided with a hook 22, a side opening 23 to correspond with the bobbin cover opening 14, and an inner projection 24 which is adapted to slide in the slot 15 when the bobbin cover 11 is placed in the bobbin race 21.

Specification of Letters Patent.

Patented Mar. 2, 1915.

Serial No. 601,550.

A central inward projection or supporting member 25 is secured to the bobbin race 21, and is formed with a shoulder 26, and a slot 27 A spring 28 secured in the shouldered portion 26 is movable in the slot 27, and is formed with a hump or shoulder 29 which projects from the slot 27 and is adapted to engage the shoulder 2O of the bobbin cover when it is placed in the bobbin race 21. 'Ihe shoulder 29 is rounded in form so that the bobbin is held yieldingly and firmly in position, and may also be easily and quickly removed.

What I claim is:

1. In a bobbin holder, a circular bobbin race having a substantially cylindrical wall and a post at its axis; a bobbin cover disposed in said race, having a central opening engaging said post and a slot in the periphery thereof; a pin in the wall of said race, extending into said slot and adapted to lock said race and cover against relative rotary movement; and a latch holding said race and cover against relative longitudinal movement.

2. In a bobbin holder, a cover and a central tubular member having an annular enlargement forming an internal shoulder at its base end, in combination with a separable bobbin race having a central divided tongue, the divisions of which are spaced apart and adapted to be inserted into said tubular member, a spring permanently anchored at one end of the space extending t'o substantially the forward end thereof, and having a catch at its free end adapted to engage said internal shoulder, and yieldingly lock said cover and race together, and a pin and slot connection for preventing the relative rotation of said cover and race.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 28th day of December A. D. 1910.

FRANK EHRENDRIECH.

Witnesses:

C. B. ATWooD, J. W. ELDREDGE.

copies of this patent may be obtained for ive cents each, by addressing the Commissioner of Patents,

' Washington, 1D. C. 

